The SVD analysis technique further suggests that there are a good relationship between SST in the regions of 20°～30°S, 110°～130°W and 10°～5°N, 160°W～180° and the lightning activities in Peru and east Brazil, but the variation of SST results in different variation tendencies in Peru and east Brazil.
A LLP made Direction Finder (DF) was connected properly with type TCCJ-2000 transient converter to record the strength and wave shape of the electromagnetic radiation from lightning flash with sampling time, recording length and bandwidth of 0.1 μs,204.8 μs and 500Hz～500kHz, respectively. Data collected were processed and stored by a PC through an installed inside PET-48DIO board .
However two artificially triggered lightning flashes in altitude produced positive charges on the top of path of rocket and negative charges on the bottom of path of rocket,the maximum values of charge were 3.7×10 -5 C/m and 4.5×10 -5 C/m respectively.
For negative electric field on the ground,two artificially triggered lightning flashes on the ground produced positive charges on the path of rocket. Their average magnitude were 1.0×10 -5 C/m and 6.7×10 -6 C/m respectively and average corona currents were 0.68mA and 0.57mA respectively.
The daily variation of CG lightning flashes assumes a form of unimodal undulance,with the peak over 60 times from 18:00 to 21:00 and at 01:00 and the valley below 10 times from 10:00 to 13:00.Lightning flashes occur more frequently at night than in the daytime.
Equations of motion of ball lightning in a rocket airstream
Hydrodynamic interaction of ball lightning and unsteady airflows
The Anti-Lightning Protection System of the Andyrchi Facility
The system of anti-lightning protection measures set up under the high mountain conditions of the Andyrchi facility at the Baksan Neutrino Observatory of the RAS INR is described.
A number of practical recommendations for the anti-lightning protection of the electronic equipment at physics installations that have long lines of communication between their physical quantity sensors and recording instruments are given.
Also, lightning flash rates are enhanced by the production of more intense and deeper convective cells by the merger process, especially by which, the more graupel-like ice particles are formed in clouds.
The explosive convective development and the late peak lightning flash rate can be found during merging process.
With the developed system, the whole progression process in time and space of a lightning flash can be reconstructed.
It is shown that lightning flash counters responding only to the electrostatic component of the change in field are likely to be least subject to error; this implies a preferential selection of very low frequencies.
Studies of the electrical activity of thunderstorms with lightning flash-counters
(cheatgrass) is a dominant weed that has increased the frequency of wildfire in western North America since being introduced about 120 years ago from Central Asia.
Based on the effects of a wildfire which occurred in the Spanish Serra Calderona Natural Park - a typical Mediterranean ecosystem - the regeneration process of the wood mouse population and its helminth community is analysed.
sylvaticus should be considered suitable biological tags of environmental perturbations, such as a wildfire, and the wood mouse/helminth model can be applied to predict the consequences for helminth species in general.
The study was carried out in the Spanish Natural Park of the Serra Calderona and comprised a 13 year period, from the 2nd to the 14th year after a wildfire.
This study examined the extent of children's and adolescents' psychosocial maladjustment associated with a natural disaster, namely, wildfire.
Modeling the development of the stepped leader of a lightning discharge
Main stage of the lightning discharge: Mechanism and output characteristics
Physical processes responsible for the lightning discharge are considered.
An expression relating the basic physical quantities describing the evolution of the lightning discharge to the magnitude and waveform of the lightning current is found.
These results are given for convenience in analyzing another problem, associated with the formation of such ionic toroidal vortex surfaces (stable in Wood's sense) during a streak lightning discharge in the atmosphere (ball lightning model).